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Type-A RCD failing 180 degree ramp test

Former Community Member
Former Community Member
Hi


We are testing a type-A RCD (see image: "ABB") with a METREL MI 3152 (see image: "MI 3152 test").

As the image shows, the ramp test (I delta) is failing to trip the RCD for the negative half wave.


Have oneone seen this before?


Br Sebastian
attachments.zip
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  • Former Community Member
    0 Former Community Member

    mapj1:

    looks faulty to me.  Very Surprising though.




    The most surprising part is that test "6" and "2" are similar (waveform) at one point during test "6" - and test "2" doesn't fail (see: "2" and "2-1").

     

    attachments.zip
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  • Former Community Member
    0 Former Community Member

    mapj1:

    looks faulty to me.  Very Surprising though.




    The most surprising part is that test "6" and "2" are similar (waveform) at one point during test "6" - and test "2" doesn't fail (see: "2" and "2-1").

     

    attachments.zip
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